<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .box {
      /* 正常 */
      font-style: normal;
      /* 斜体:字体本身支持时显示 */
      font-style: italic;
      /* 倾斜:文字切斜展示 */
      font-style: oblique;
    }
  </style>
</head>

<body>
  <div>我的div元素</div>
  <div class="box">我的div元素</div>
</body>

</html>